The Xbox 360 console also stores temporary files for the Xbox Games Store. You may be able to resolve this issue if you delete the Marketplace System Data file.

To delete the Marketplace System Data file, follow these steps:

On your console, go to Settings, and then select System.

Select Storage and then select your primary storage device.

Select System Items.

Select Marketplace System Data.

Select Delete.

Restart your console.

Try to buy or download the item again.

If you still can’t access the Xbox Games Store after you clear the system cache and delete the Marketplace System Data file, the Store is likely down for system maintenance or experiencing a temporary problem. Wait a while and try again later.